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    <h1>弹球</h1>
    <p></p><div>不等了,现在就清除<input type=number max=100 style=\'border:0;background-color:#000000\' onblur=\'clearballs(this.value)\'>个球<br>或..<button onclick=\'clearballs(1)\'>清除1个</button><button onclick=\'clearballs(5)\'>清除5个</button><button onclick=\'clearballs(10)\'>清除10个</button></div>
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